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The Curveball Trainer teaches - Proper Grip - Proper Wrist Action - Builds muscle memory for throwing the curveball - Strengthens
your pitching arm $14.95 plus shipping Use your Curveball Trainer at any time, by yourself, before a game, during a game, at practice or at home. No need to throw to a partner, the Curveball Trainer is a self- contained training device! |
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